cfg_default! and its friends interfere with tooling

[ypoluektovich]

With the Rust plugin in IntelliJ IDEA, the use of cfg_default!, cfg_std!, and other similar macros prevents the IDE from discovering the top-level module declarations. That results in absolutely no IDE features working for the types and functions contained within those modules.

• intellij-rust 0.2.111.2147-193
• IntelliJ IDEA 2019.3 (Build #IU-193.5233.102)
• async-std = "1.2.0"

[Noah-Kennedy]

I know that work has been underway to fix this for quite some time in the IntelliJ Rust plugin. This thread discusses it more: intellij-rust/intellij-rust#1191. As a Clion user myself, I feel your pain, but I think this is a problem for the tool more than the libraries.